171203021101 has 16 divisors (see below), whose sum is σ = 200815825408. Its totient is φ = 142899649200.

The previous prime is 171203021089. The next prime is 171203021107. The reversal of 171203021101 is 101120302171.

It is a de Polignac number, because none of the positive numbers 2^k-171203021101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171203021107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 759555 + ... + 958816.

It is an arithmetic number, because the mean of its divisors is an integer number (12550989088).

Almost surely, 2^171203021101 is an apocalyptic number.

It is an amenable number.

171203021101 is a deficient number, since it is larger than the sum of its proper divisors (29612804307).

171203021101 is a wasteful number, since it uses less digits than its factorization.

171203021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718752.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 171203021101 its reverse (101120302171), we get a palindrome (272323323272).

The spelling of 171203021101 in words is "one hundred seventy-one billion, two hundred three million, twenty-one thousand, one hundred one".